What is the primary purpose of applying brine to roadways?

Applying brine to roadways primarily serves the purpose of lowering the freezing point of water. This is particularly important in winter weather conditions when temperatures drop near or below freezing. By using brine, which is a solution of salt in water, the freezing point is reduced, which helps to prevent the formation of ice on the road surface. This effective de-icing method not only aids in maintaining safer driving conditions but also reduces the likelihood of accidents caused by icy patches. The use of brine is a proactive approach, allowing for better traction and overall roadway safety during adverse weather conditions.